group families in fee calc

src/model/user.rs

@@ -142,10 +142,15 @@ impl User {
         let mut fee = Fee::new();
 
         if let Some(family) = Family::find_by_opt_id(db, self.family_id).await {
-            fee.name(format!("{} + Familie", self.name));
+            let mut names = String::new();
             for member in family.members(db).await {
+                if !names.is_empty() {
+                    names.push_str(" + ");
+                }
+                names.push_str(&member.name);
                 fee.merge(member.fee_without_families(db).await);
             }
+            fee.name(names);
             if family.amount_family_members(db).await > 2 {
                 fee.add("Familie 3+ Personen".into(), FAMILY_THREE_OR_MORE);
             } else {
@@ -357,6 +362,26 @@ ORDER BY last_access DESC
         .unwrap()
     }
 
+    pub async fn all_payer_groups(db: &SqlitePool) -> Vec<Self> {
+        sqlx::query_as!(
+            Self,
+            "
+SELECT id, name, pw, deleted, last_access, dob, weight, sex, member_since_date, birthdate, mail, nickname, notes, phone, address, family_id FROM user 
+WHERE family_id IS NOT NULL
+GROUP BY family_id
+
+UNION
+
+-- Select users with a null family_id, without grouping
+SELECT id, name, pw, deleted, last_access, dob, weight, sex, member_since_date, birthdate, mail, nickname, notes, phone, address, family_id  FROM user 
+WHERE family_id IS NULL;
+        "
+        )
+        .fetch_all(db)
+        .await
+        .unwrap()
+    }
+
     pub async fn ergo(db: &SqlitePool) -> Vec<Self> {
         sqlx::query_as!(
             Self,

src/tera/admin/user.rs

@@ -56,7 +56,7 @@ async fn fees(
 ) -> Template {
     let mut context = Context::new();
 
-    let users = User::all(db).await;
+    let users = User::all_payer_groups(db).await;
     let mut fees = Vec::new();
     for user in users {
         if let Some(fee) = user.fee(db).await {

staging-diff.sql

@@ -1,5 +0,0 @@
-CREATE TABLE IF NOT EXISTS "family" (
-	"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT
-);
-
-ALTER TABLE "user" ADD COLUMN "family_id" INTEGER REFERENCES family(id);